1 of 53

1

van der Waals Heteroepitaxy on Muscovite

Ying-Hao Eddie Chu

Department of Materials Science & Engineering,

National Chiao Tung University, Taiwan

​

​

​

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

2 of 53

2

Movies --- Future World

​

Transparent smart electronics with excellent chemical and thermal stabilities.

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

3 of 53

3

Current available flexible substrates

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

4 of 53

4

Introduction of Muscovite

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

5 of 53

5

van der Waals Epitaxy

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

6 of 53

6

Heteroepitaxial Oxide Films on Muscovite

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

7 of 53

7

Heteroepitaxial Oxide Films on Muscovite

SrTiO3: $25/cm2 YSZ: $5/cm2 Sapphire: $0.5/cm2 Mica: $0.2/cm2

​

Also works for metal, IV and III-V semiconductors

​

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

8 of 53

8

Convention Metal on Muscovite

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

9 of 53

9

Convention Semiconductor on Muscovite

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

10 of 53

10

Epitaxial GaN on muscovite

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

11 of 53

11

Possible Impact Area

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

12 of 53

12

Transparent Conducting Oxides

Indium Tin Oxide (ITO)

Al doped ZnO (AZO)

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

13 of 53

13

Structural Characterization of TCOs on mica

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

14 of 53

14

Interface Quality of TCOs on mica

Heteroepitaxial systems!

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

15 of 53

15

Optoelectric Properties of TCOs on mica

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

16 of 53

16

Cyclability of TCOs on mica

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

17 of 53

17

2” Wafer TCOs on mica

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

18 of 53

18

Perovskite Solar Cells on mica

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

19 of 53

19

Update of Transparent Conducting Oxide

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

20 of 53

20

Update of Transparent Conducting Oxide

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

21 of 53

21

Update of Transparent Conducting Oxide

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

22 of 53

22

Baseball 棒球

One of the most popular sports in USA, Japan, Korea, and Taiwan

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

23 of 53

23

Baseball 棒球

vs.

王建民 陳金鋒

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

24 of 53

24

Baseball Pitching Grips

It controls the speed and the movement of baseball!

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

25 of 53

25

Can you be a pitcher?

In video games, the choice of grips is the key step.

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

26 of 53

26

Gesture Sensing (Imaging sensors)

現有感測器多為光學辨識

光學辨識缺點：需光源、需無遮蔽、有被監視風險

蘋果2015年獲准的專利：US 8970501B2

懸浮手勢辨識，利用近距離LED照射手指，�捕捉折射光線來判定位置

​

蘋果2015年獲准的專利：US 20120313848A1

利用一個二維和三維相機交叉比對辨識用戶手勢

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

27 of 53

27

Gesture Sensing (Smart Gloves)

Two key parts:

  1. Pressure sensors
  2. Flex sensors

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

28 of 53

28

Gesture Sensing (Smart Gloves)

Mechanical controllable components:

  1. Flexible
  2. Sensitive to flexing
  3. Spatial Resolution

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

29 of 53

29

Mechanically Tunable Components

The Question: can we develop to dynamically control these functionalities?

​

We need 1. Flexible heterostructure. 2. Heteroepitaxy.

​

Can we get flexible heteroepitaxy?

​

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

30 of 53

30

Mechanically Tunable Resistivity

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

31 of 53

31

Heteroepitaxy of ZnO/muscovite

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

32 of 53

32

A giant change of resistance under bending

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

33 of 53

33

The physical mechanism

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

34 of 53

34

A giant change of resistance under bending

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

35 of 53

35

Transparent flex sensors with spatial resolution

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

36 of 53

36

Mechanically Tunable Polarization

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

37 of 53

37

Ferroelectricity

S. W. Choeng and M. Mostovoy, Nature Mater. 6, 13 (2007).

C. Ederer and N. A. Spaldin, PRL 95, 257601 (2005).

Schlom et al, J. Am. Ceram. Soc. 91, 2429 (2008).

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

38 of 53

38

(Ba,Sr)TiO3/muscovite

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

39 of 53

39

Epitaxial (Ba,Sr)TiO3 on muscovite

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

40 of 53

40

Mechanically tunable nonlinear dielectrics

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

41 of 53

41

Phase Transition

--- The ferroelectric-to-paraelectric phase transition can be observed.

--- Mechanical bending can cause a phase transition.

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

42 of 53

42

Mechanically tunable transistor

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

43 of 53

43

Ferroelectricity Modulating Surface Potential

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

44 of 53

44

Determination of band structure

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

45 of 53

45

Determination of band structure

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

46 of 53

46

Mechanically Tunable Magnetization

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

47 of 53

47

Mechanically tunable magnetization

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

48 of 53

48

Mechanically tunable magnetization (MgFe2O4)

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

49 of 53

49

Mechanically tunable magnetization (MgFe2O4)

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

50 of 53

50

Mechanically Tunable Magnetoresistance

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

51 of 53

51

Mechanically Tunable Magnetoresistance

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

52 of 53

52

Mechanically Tunable Magnetoresistance

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan

53 of 53

53

Summary

  • “MICAtronics” is to build up X-tronics on mica substrates. A new platform to use inorganic materials for transparent soft technology.
  • Mechanically tunable components on mica can be fabricated.

2019-11-20

國立清華大學物理系專題演講

Hsinchu, Taiwan